Riso I have a Riso GR1700. It no longer picks up the original paper you are trying to copy to make a master.I can manually place the original copy I am trying to copy under the cover and the machine will then pick up the original and make a copy. What must I do to correct the problem in the first step of this procedure? Thanks, Tim timconnie816@cox.net

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The masters and ink should work. Cannot remember if the drum does. Put in the duplicator it will either fit or it won't. It will not damage the machine unless you try to force it in. If compatible it will slide right in and the machine will recognize it when you close the front door.

Seems that you have mismatched the sides of the master. Are you sure you placed the master correctly?
An original Riso master should have a text at the side of the roll to show where the coloured flange should be.

A D17 is incorrect master roll installed. This could be caused by a) it IS the incorrect master roll, or b) the RF tag that is inside the master roll has gone bad. Try a new one in the original packaging to help with diagnoses. Make sure they are RISO Z type master rolls specific for an RZ220.

You have to go to your page setup and set for the size you are printing. Also you have to go to the machine and look at the size the paper setting is at.. they have to match.. You may be printing 11 x 17 when the paper setting on the machine are letter.. This will do this...cause the machine will auto adjust to fit onto the settings on the machine.

When machine displayed E-11 it’s interrupted the operation. Its means Pressure Control Motor Lock – If the Pressure centering sensor does not detected on & off within 5 seconds from the start of the machine.

This
problem is the engine of pressure, this is located by uncovering the
back, more or less in the middle and bottom, there is a small motor that is
attached by screw(s). When the machine is turned on its intial
position should be detected and if not , the sensor can be bad or the starting
position is dirty or broken cable, or motor cables are
bad, inspect them, reset the code and turn the machine off and back on.

1)You can set the dencity of the riso on the controll panel before you do your masters.
2)Always use original ink.
3)If you are a bit technical you can remove the pressure roller and strip all old ink buildup from it.was it with water ann soap.
If you open the drum and take it out completely,the pressure roller is the black roller inside the machine that put directly pressure on the drum.There is only one screw to loosen and then it hooked out,but it can be tricky to hook it back if you not doing it every day.